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Table of Contents

NSD

derived from ServiceComponentDescriptor

...

  1.1.1    NetworkServiceDescriptorModel

Image Added                                                  

1.2  Classes

1.2.1                  NetworkServiceDescriptor

The NSD class is a deployment template whose instances are used by the NFVO for the lifecycle management of NSs. For all attributes in this class, the Producer is SDC and the Consumer is SDC/UUI/VFC

...

References the VNFD of a constituent VNF.

...

References the PNFD of a constituent PNF.

...

M

...

0..N

...

Sapd

...

Provides the descriptor of a service access point of the network service.

...

M

...

0..N

...

Vnffgd

...

Provides the descriptors of the applicable forwarding graphs.

...

M

...

0..N

...

MonitoredData

...

Identifies either a virtualised resource-related performance metric or a VNF Indicator.

...

autoScalingRule

...

M

...

0..N

...

Applied stereotypes:

  • Preliminary
  • OpenModelClass
    • support: MANDATORY

Attribute   Name

Type

Mult.

Stereotypes

Description

nsdIdentifier

Identifier

1

OpenModelAttribute

  • isInvariant: true
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Identifier of this NSD class. It globally   uniquely identifies an instance of the NSD

 

 

designer

String

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Identifies the designer of the NSD.

 

 

version

Version

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Identifies the version of the NSD.

 

 

nsdName

String

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Provides the human readable name of the   NSD.

 

 

nsdInvariantId

Identifier

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Identifies an NSD in a version independent   manner. This attribute is invariant across versions of NSD.

 

 

autoScalingRule

Rule

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Specifies a rule to trigger a scaling   action on a NS instantiated according to the NSD. NOTE 1:  The rule is based on a combination of   assertions on the values of virtualised resource-related performance metrics   and VNF Indicators identified by the monitoredInfo attribute.

SDCSDC/UUI/VFCautoScalingRule

lifeCycleManagementScript

M

0..N

LifeCycleManagementScriptAttribute NameTypeMultiplicityDescriptionApplied StereotypesProducerConsumerETSI IFA014

virtualLinkDescId

Identifier

1

Identifier of the NsVirtualLinkDesc information element. It uniquely identifies a VLD.

support: MANDATORYSDCSDC/UUI/VFCvirtualLinkDescId

NOTE 2:  There may be multiple data sources (each   identified as monitoredInfo) per rule

 

 

monitoredInfo

MonitoredData

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Identifies either a virtualised   resource-related performance metric or a VNF Indicator.

 

 

lifeCycleManagementScript

NsLifeCycleManagementScript

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Provides a life cycle management script   written in a Domain Specific Language (DSL).

SDCSDC/UUI/VFClifeCycleManagementScript

nsDf

M

1..N

NsDf

Identifies a DF within the scope of an NSD.

SDCSDC/UUI/VFCnsDf

security

M

1

SecurityParameters

Provides a signature to prevent tampering.

SDCSDC/UUI/VFCsecurity

NsVirtualLink

 

 

_virtualLinkDesc

NsVirtualLinkDesc

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Provides the constituent VLDs. Cardinality   of 0 means that the NS is a NF set with unspecified connectivity.

 

 

_vnfdId

Vnfd

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

PassedByReference

References the VNFD of a constituent VNF.

 

 

_pnfdId

Pnfd

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Experimental

PassedByReference

References the PNFD of a constituent PNF.

 

 

1.2.2                  NsVirtualLinkDesc

The NsVirtualLinkDesc class provides general information enabling the instantiation of virtual links. For all attributes in this class the Producer is SDC and the Consumer is SDC/UUI/VFC.

Parent class: VirtualLinkDesc

Applied stereotypes:

  • Preliminary
  • OpenModelClass
    • support: MANDATORY

Attribute   Name

Type

Mult.

Stereotypes

Description

vitualLinkDescProvider

String

0..1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Defines the organization generating the   VLD.

support:

Option

SDCSDC/UUI/VFCvitualLinkDescProvidervirtualLinkDescVersionString1

 

 

virtuaLinkDescVersion

Version

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Specifies the version of the VLD.

support: MANDATORY

 

SDCSDC/UUI/VFCvirtualLinkDescVersionconnectivityTypeConnectivityType1

The ConnectivityType information element specifies the protocol exposed by a VL and the flow pattern supported by the VL.

support: MANDATORYSDCSDC/UUI/VFCconnectivityTypevirtualLinkDfVirtualLinkDf1..NThe VirtualLinkDf information element specifies properties for instantiating a

 

virtualLinkDf

VirtualLinkDf

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Specifies properties for instantiating a   VL according to a specific flavour.

support: MANDATORYSDCSDC/UUI/VFCvirtualLinkDftestAccessString0..NSpecifies test access facilities expected on the VL (e.g. none, passive monitoring, or active (intrusive) loopbacks at endpoints).support: MANDATORYSDCSDC/UUI/VFCtestAccess

 

 

virtualLinkDescId

Identifier

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Uniquely identifies a VLD in the parent   descriptor. For VnfVirtualLinkDesc, the parent descriptor is the VNFD. For   NsVirtualLinkDesc, the parent descriptor is the NSD. Note: the description of   this class are different in ETSI GS NFV IFA 011 and ETSI GS NFV IFA 014. The   present definition merges the 2 definitions.

 

 

connectivityType

ConnectivityType

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Specifies the protocol exposed by a VL and   the flow pattern supported by the VL.

 

 

description

String

0..1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Provides human-readable information on the   purpose of the VL (e.g. control plane traffic).

support: MANDATORY

 

SDCSDC/UUI/VFCdescriptionsecuritySecurityParameters0..1

Provides a signature to prevent tampering.

support: MANDATORYSDCSDC/UUI/VFCsecurity

ConnectivityType

Attribute Name

Type

Multiplicity

Description

Applied Stereotypes

layerProtocol

Enum

1

Identifies

 

1.2.3                Vnfd

The Vnfd class is a deployment template enabling on-boarding VNFs and referencing them from an NSD. It focuses on connectivity aspects only.

1.2.4                Pnfd

The Pnfd class is a deployment template enabling on-boarding PNFs and referencing them from an NSD. It focuses on connectivity aspects only.


1.3  Data Types

1.3.1                  ConnectivityType

The ConnectivityType datatype specifies the protocol exposed by a VL and the flow pattern supported by the VL.

Attribute   Name

Type

Mult.

Access

Stereotypes

Description

layerProtocol

LayerProtocol

1

RW

Preliminary

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

 Identifies the protocol this VL gives access to (Ethernet, MPLS, ODU2,   IPV4, IPV6, Pseudo-Wire).

support: MANDATORY

 

 

flowPattern

String

0..1

Identifies

RW

Preliminary

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

 Identifies the flow pattern of the connectivity (Line, Tree, Mesh).

support: MANDATORY

VirtualLinkDf

Attribute

 

 

1.3.2                  VirtualLinkDf

The VirtualLinkDf datatype specifies properties for instantiating a VL according to a specific flavour.

Attribute   Name

Type

Multiplicity

Mult.

Description

Access

Applied

Stereotypes

Description

flavourId

Identifier

1

Identifies a flavour within a VnfVirtualLinkDesc.

support: MANDATORYqosQoS

RW

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

 Identifies this VirtualLinkDF datatype within a VLD.

 

 

qos

NsQoS

0..1

QoS of the VL.support: MANDATORYserviceAvaibilityLevelEnum

RW

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

 Specifies quality of service parameters applicable to a VL.

 

 

serviceAvaibilityLevel

ServiceAvailabilityLevel

0..1

Specifies

RW

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

 Specifies one of the three levels defined in ETSI


GS NFV-REL 001

[i.5]:
• Level 1.
• Level 2.
• Level 3.support: MANDATORY

QoS

Attribute Name

Type

Multiplicity

Description

Applied Stereotypes

latency

Number

1

Maximum latency in ms.

support: MANDATORY

: ?   Level 1 ? Level 2 ? Level 3

 

 

1.3.3                  MonitoredData(TBD)

The MonitoredData datatype identifies information to be monitored during the lifetime of a network service instance.

1.3.4                  NsLifeCycleManagementScript

The LifeCycleManagementScript information element specifies a script for the NS.

Attribute   Name

Type

Mult.

Access

Stereotypes

Description

event

String

1..*

RW

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

 Describes NS lifecycle event(s) or an external stimulus detected on an   NFVO reference point.  NOTE 1: A   minimum set of NS lifecycle events triggered internally by the NFVO includes:   start instantiation, end instantiation, start scaling, end scaling, start   healing, end healing, start termination, end termination, start update, end   update. NOTE 2: A minimum set of external stimulus includes: the receipt of   request message of instantiation, scaling, healing, termination, update of   NS.

 

 

script

String

1

RW

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

 Includes an NS LCM script (e.g., written in a DSL) triggered to react   to one of the events listed in the event attribute.

 

 

1.3.5                  NsQoS

The NsQoS datatype specifies quality of service parameters applicable to a NS VL.

...

Attribute   Name

Type

Mult.

Access

Stereotypes

Description

priority

Integer

0..1

RW

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

 Specifies the priority level in case of congestion on the underlying   physical links.

 

 

latency

Number

1

RW

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

 Maximum latency in ms.

 

 

packetDelayVariation

Number

1

Maximum

RW

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

 Maximum jitter in ms.

 

support: MANDATORY

 

packetLossRatio

Number

0..1

Maximum

RW

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

 Maximum packet loss ratio. Cardinality is 0 if no packetLossRatio requirement exists.

support: MANDATORY

 

priorityInteger0..1

Specifies the priority level in case of congestion on the underlying physical links.

support: MANDATORY

Vnfd

refer to resource definition

VnfExtCp

 


1.4       Enumerations


1.4.1                   ServiceAvailabilityLevel

Specifies one of the three levels defined in ETSI GS NFV-REL 001: ? Level 1 ? Level 2 ? Level 3

 

Contains Enumeration Literals:

  •  LEVEL_1:
  •  LEVEL_2:
  •  LEVEL_3: